Hi Monks.

Strawberry Perl (5.24.0) on a Windows XP sp3 machine, the following code: 

use strict;
use warnings;
use v5.24;

my $s = "dogcat
         42
         birdfish";

if ($s =~ /(?<=dog).*\d+(?=fish)/sgxi) {
    say "Ah! The meaning of life!\n\n";
}

[download]


...doesn't appear to be matching the 42 with the pattern provided unless I change the number to a string, e.g., 'bird'. I also attempted to use capturing parentheses, but the result was the same.

Thank you monks.

Sarah

In reply to Positive lookbehind and lookahead confusion by Anonymous Monk

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